When you want to upload a file, you just create an object and initialize the file upload to the server (this is done asynchronously).

Setting up a backend for an app with Kinvey is very easy and takes minutes. All you have to do is sign up and through their graphical interface follow all the steps, which boils down to creating tables and identifying the type of data that is being stored.

Then you download the library, integrate it with your app and initialize the process with one single line.

User registration with Kinvey is pretty good and usually works without any problems. It's also very easy to use, you simply pass the username, password, email, etc. to the required method and register a callback that returns whether the registration was a success or a failure.

Same thing is done for login and logout as well.